Dan Hua, Tennessee Wildlife Resources Agency wildlife biologist and facility supervisor of the Cumberland River Aquatic Center in Gallatin, Tennessee; examines the health condition of juvenile mussels at CRAC Jan. 18, 2021. When the U.S. Army Corps of Engineers Nashville District lowered Lake Cumberland in Kentucky in 2008 to relieve pressure on Wolf Creek Dam, an agreement with the U.S. Fish and Wildlife Service to mitigate environmental impacts resulted in mitigation dollars being committed to the aquatic center. (Courtesy Photo)